Setting inside or outside fish markers
Turning the fish alarm on and off
The alarm
2.Press the CURSOR PAD up or down to set the depth, or use the KEYPAD to manually enter the desired depth.
The depth is displayed in the tab below the SET UPPER MKR key.
To set the depth of the lower marker:
1.At the FISH ALARM window, press SET LOWER MKR.
The lower marker window is highlighted in black.
2.Press the CURSOR PAD up or down to set the depth, or use the KEYPAD to manually enter the desired depth.
The depth is displayed in the tab below the SET LOWER MKR key.
If you designate the markers as inside markers, the fish alarm sounds when fish are detected within these markers. If you set these markers as outside markers, the fish alarm sounds when fish are detected outside of these markers.
To set the markers to inside or outside, at the FISH ALARM window, press INSIDE/OUTSIDE MKRS to toggle between the inside and outside settings. The setting is displayed in the tab below the INSIDE/OUTSIDE MKRS key.
To turn the alarm on, at the FISH ALARM window, press TURN ALARM ON. Generally, you’ll want to turn the alarm on after making all the other settings.
To turn the alarm off, press TURN ALARM OFF.
When fish are detected, the alert tone sounds and the message “FISH!” is displayed. This message clears automatically after 20 seconds and the alarm is rearmed.
Setting the bottom alarm
When the bottom alarm is set, an alarm sounds if the echo sounder detects that the bottom is shallower than the limit you’ve set.
Page 58 | 491 Echo Sounder Operations Manual |
